DES Testing Laboratory Achieves ISTA Certification

At Delserro Engineering Solutions (DES), our commitment to ensuring the highest standards of product reliability has reached new heights with our recent achievement: ISTA® certification. We are thrilled to announce that DES has been certified by the prestigious International Safe Transit Association (ISTA) as a qualified Transport Testing Laboratory. This certification is not merely a …

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How to Make Your Product More Reliable Through Testing

At DES, we have tested many different kinds of products ranging from medical devices to aerospace products. We have performed numerous reliability tests and developed numerous accelerated life test plans. Many times, our customers ask us, “How do we make our products more reliable?” There are analytical methods and processes that can be used to …

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MIL-STD-810 Vibration Testing Overview

This is part one of a series of blog posts discussing MIL-STD 810 Vibration Testing. This blog was written with reference to MIL-STD-810G w/Change 1 dated 15 April 2014. DES has the experience and expertise to help you determine what profiles are appropriate for your product and to run your MIL-STD-810 vibration test. Check out …

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Door Open/Close Accelerated Life Test Case Study

Customer Goal A customer contacted DES, seeking to create a reliability test plan for their product based on customer usage, new features and design limits. One of the concerns identified by the customer was the need for an accelerated life test which tested whether their “door assembly” product met the design specification for usage. In …

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Circuit Board HALT Testing Case Study

Customer Goal A customer approached DES looking to perform Highly Accelerated Life Testing (HALT) on a new circuit board design. DES and the customer agreed to test the circuit boards using DES’s traditional HALT test procedure which calls for hot/cold temperature steps followed by rapid temperature ramping, vibration steps and combined temperature and vibration stresses. HALT …

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Cooling Fan Reliability Testing Case Study

Customer Challenge A customer approached DES looking to find an accelerated test solution for an AC powered cooling fan used in one of their products. The product had been established in the marketplace and the company was now looking for ways to reduce cost by looking at different cooling fan suppliers. Most fans, however, have …

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Choosing A Vibration Test Lab Part 2

Part 2 – Selecting a Lab and Performing Your Test If you have not done so yet, please check out Part 1 – Defining your project and Obtaining a Quote. You obtained quotes from a couple of vibration test labs. Your next task is to select a vibration test lab to perform your vibration test. …

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Choosing A Vibration Test Lab Part 1

Part 1 – Defining your project and Obtaining a Quote Vibration testing is a very specialized field, not very well understood by many. There are different types of vibration and there are an enormous number of vibration test specifications. Vibration testing equipment is very expensive to purchase forcing many companies to hire a vibration test …

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Mixed Mode: Sine on Random Vibration Testing, RoR, SoRoR

Mixed Mode Vibration Testing is less common than Sinusoidal and Random Vibration Testing. However, it does have a special purpose for simulating specialized helicopter vibration or vibration from tracked vehicles such as tanks. The three mixed modes of vibration testing are: Sine-on-Random (SoR) Random-on-Random (RoR) Sine-on-Random-on-Random (SoRoR) Some common test standards that have specifications for Mixed …

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What Kind Of Failures Occur During HALT?

Product failures in HALT testing are defined as either the cessation of any functions or an out-of-specification condition for any performance characteristic. When a failure occurs, it is documented in DES’s HALT log. The exact time and test condition when each failure occurred is noted. If the product fails to operate, the temperature or vibration …

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